This is just nonsensical. I think this definition falls within the class of matches that are made purely on the rationale that the database definition of each given term contains the same word, which doesn't necessarily make the original terms a match. I could go on, but I think my argument is familiar.

------tangle with is related to change state

tangle with means "get involved in or with"change state means "undergo a transformation or a change of position or action"

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I think this match is just plain wrong. Tangling with something doesn't necessarily involve a change in state, position, or action.

glutethimide means "sedative (trade name Doriden) used to treat some sleep disorders"sedative drug means "a drug that reduces excitability and calms a person"

benzodiazepine is related to depressant

You said: sedative drug

benzodiazepine means "any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants"depressant means "a drug that reduces excitability and calms a person"

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Perhaps a pharmacist could explain some nuanced shade of meaning between these two choices, but from my meager understanding, every sedative is a depressant. The given definition of "benzodiazepine" even includes the term "sedative". I would say that these two matches are interchangeable.

Again, just because the verbal form of "wharf" includes the word "provide" doesn't necessarily mean that "wharf" and "provide" are a match in meaning. It looks like "provide" is coming up as a general match for just about everything.

I would say (as an English speaker) that 'rarely' is a distinctly better choice as opposite for 'ofttimes' than 'remarkably' since rare/oft implicitly and exclusively consider the specific number of occurences of an event in retrospect.

'Remarkably' seems to me to refer more to the speaker's perception of the nature of the occurence, though clearly there is SOME dependence on how often an such an event occurs.

freeze means "prohibit the conversion or use of (assets)"unblock means "make (assets) available"

I'd think they're more or less interchangeable; note the word "unblock" is also in the definition for "loosen up", confusing the matter further. Of course I got them wrong :P This was set 19; also, no one has a perfect score today, so this may be why. (EDIT: someone does indeed have a 30, but were so far down the list, I didn't notice immediately.)

To my post above: Note that freeze and loosen up only go together because of the definition used for "freeze", but if it's defined as "locking up with cold" or something, then it's a bit too vague; the match would be fine if the stuff/loosen up one wasn't in the same set!